Rotary Electric Machine and Vehicle Provided with the Same
AssigneeHitachi Automotive Systems, Ltd.
InventorsYasuyuki SAITO, Yuji KANOH, Toshio ISHIKAWA
Life of this patent
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Abstract
A rotary electric machine includes a rotor, a stator, and stator windings. The stator winding has a plurality of slot conductor groups having a plurality of slot conductors of the same phase. A plurality of slot conductors of the slot conductor group are inserted into a predetermined number (Ns) of slots continuously arranged in a circumferential direction of the stator core such that the slot and the layer are adjacent to each other. The predetermined number (Ns) is set to “Ns=NSPP+1,” where “NSPP” denotes the number of slots per pole per phase.
Claims6
A rotary electric machine comprising:
- a stator core provided with a plurality of slots;
- stator windings of a plurality of phases provided with a plurality of wave-wound winding coils, each having a slot conductor inserted into each slot of the stator core and included in any one of six or more even-numbered layers and a jumper conductor that connects the same side ends of the slot conductors inserted into different slots to form a coil end;
- and
- a rotor rotatably supported to the stator core by interposing a vacancy,
- wherein the jumper conductor connects the slot conductors to each other by striding the slots with a slot pitch of “Np=N+1” in one of the coil ends and striding the slots with a slot pitch of “Np=N−1” in the other coil end, where “N” denotes the number of slots per pole,
- the stator winding has a plurality of slot conductor groups having a plurality of slot conductors of the same phase,
- the plurality of slot conductors of the slot conductor group are inserted into a predetermined number (Ns) of slots continuously arranged in a circumferential direction of the stator core such that the slot and the layer are adjacent to each other, and
- the predetermined number (Ns) is set to “Ns=NSPP+1,” where “NSPP” denotes the number of slots per pole per phase.
Dependencies are inferred from the claim text.